Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1986-10-24
1987-04-21
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Rotary
310168, 310155, H02K 3900
Patent
active
046599533
ABSTRACT:
A magnetic structure including a stator including sensor windings and a field exciter, and a movable armature having a variety of applications, including a synchro resolver and a tachometer. The stator comprises a plurality of planes of oppositely polarized parallel magnetic pole pieces contained in an annular or toroidal structure of rectangular cross-section to circumferentially surround the movable rotor or armature. The parallel pole pieces of opposite polarity form a segment extending radially inward, and are surrounded by a plurality of sense windings, wherein the rotor selectively provides a relatively low reluctance path to one or more of the pole pieces, causing a change in flux and corresponding voltage to be produced in the sense windings. In one embodiment, the pole pieces are energized by a permanent magnet located in the stator to produce a tachometer output voltage upon the sense windings. In that configuration the sense winding signals vary in amplitude according to velocity and position. Alternately, the pole pieces are energized by an electromagnet at an excitation frequency, producing corresponding sense winding signals at the excitation frequency. In this case, the sense winding signals vary in amplitude and phase according to the rotor position relative to the stator. The sense winding signals for the tachometer or synchro resolver are connected to appropriate commutation and signal detection circuits to provide the desired tachometer or synchronous resolver output signals.
REFERENCES:
patent: 705482 (1902-07-01), Thiermann
patent: 2814745 (1957-11-01), Sinclair, Jr.
patent: 2917699 (1959-12-01), Grant
patent: 3132269 (1964-05-01), Craske
patent: 3293469 (1966-12-01), Crawford
patent: 3321652 (1967-05-01), Opel
patent: 3389281 (1968-06-01), Ellis
patent: 3458741 (1967-07-01), Woodward
patent: 3872334 (1975-03-01), Loubier
patent: 3956649 (1976-05-01), Silverman
patent: 4136296 (1979-01-01), Hickey
patent: 4236094 (1980-11-01), Raymond
patent: 4605889 (1986-08-01), Luneau
Duggan Donovan F.
Resolvex Corporation
LandOfFree
Magnetic structure for synchro and tachometer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic structure for synchro and tachometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic structure for synchro and tachometer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-754208